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Diffstat (limited to 'morphlib/stagingarea.py')
-rw-r--r-- | morphlib/stagingarea.py | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/morphlib/stagingarea.py b/morphlib/stagingarea.py new file mode 100644 index 00000000..126d7d91 --- /dev/null +++ b/morphlib/stagingarea.py @@ -0,0 +1,60 @@ +# Copyright (C) 2012 Codethink Limited +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; version 2 of the License. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License along +# with this program; if not, write to the Free Software Foundation, Inc., +# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + + +import shutil +import tarfile + + +class StagingArea(object): + + '''Represent the staging area for building software. + + The build dependencies of what will be built will be installed in the + staging area. The staging area may be a dedicated part of the + filesystem, used with chroot, or it can be the actual root of the + filesystem, which is needed when bootstrap building Baserock. The + caller chooses this by providing the root directory of the staging + area when the object is created. The directory must already exist. + + The staging area can also install build artifacts. + + ''' + + def __init__(self, dirname): + self.dirname = dirname + + def install_artifact(self, handle): + '''Install a build artifact into the staging area. + + We access the artifact via an open file handle. For now, we assume + the artifact is a tarball. + + ''' + + tf = tarfile.TarFile(fileobj=handle) + tf.extractall(path=self.dirname) + + def remove(self): + '''Remove the entire staging area. + + Do not expect anything with the staging area to work after this + method is called. Be careful about calling this method if + the filesystem root directory was given as the dirname. + + ''' + + shutil.rmtree(self.dirname) + |